Submission #1099360

#	Time	Username	Problem	Language	Result	Execution time	Memory
1099360		modwwe	Growing Vegetable is Fun 3 (JOI19_ho_t3)	C++17	15 / 100	71 ms	4060 KiB

joi2019_ho_t3

#pragma GCC optimize("Ofast,unroll-loops")
//#pragma GCC optimize("conserve-stack")
#include<bits/stdc++.h>
//#define int long long
#define ll long long
#define down cout<<'\n';
#define debug cout<<" cucuucucuuu",down
#define NHP     ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe  int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".out","w",stdout)
#define pb push_back
#define checktime   cerr << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
using namespace std;
#define getchar_unlocked getchar

inline int scan()
{
    char c = getchar_unlocked();
    int x = 0;
    while (c < '0' || c > '9')
    {
        c = getchar_unlocked();
    }
    while (c >= '0' && c <= '9')
    {
        x = (x << 1) + (x << 3) + c - '0';
        c = getchar_unlocked();
    }
    return x;
}

void phongbeo();
const int inf = 1e9;
const int mod2 = 1e9 + 7;
const int  mod1 = 998244353;
struct icd
{
    long double a;
    int b;
};
struct ib
{
    int a;
    int b;
};
struct ic
{
    int a, b, c;
};
struct id
{
    int a, b, c, d;
};
struct ie
{
    int a, b, c, d, e;

};

int n, m, s1, s2, s4, s3, sf, k, s5, s6, mx, s7, s8, s9, mx2, res, dem2 = 0, dem = 0, s33, dem3, dem4, l, r, mid, l2, r2, center;
int  i, s10, s12,k1,k2,k3,s11,t,lim,w;
int kk;
int el = 19;

main()
{
    if(fopen(task".inp","r"))
    {
        fin(task);
        fou(task);
    }
    NHP
    /// cin>>s1;
///modwwe
    phongbeo();
    // checktime
}
string s;
int dp[2][401][401][3];///dp(0,1) i j f1 f2
/// -> i la cot G
/// ->j la cot Y
int a[401][3];
int gf[3];
int p1[3];
int p2[3];
void phongbeo()
{
    cin>>n;
    cin>>s;
    s=" "+s;
    p1[0]=0;
    p1[1]=1;
    p1[2]=0;
    p2[0]=0;
    p2[1]=0;
    p2[2]=1;
    dp[0][0][0][0]=dp[0][0][0][1]=dp[0][0][0][2]=0;
    for(int i=1; i<=n; i++)
    {
        if(s[i]=='R') s2=0;
        else if(s[i]=='G')s2=1;
        else s2=2;
        a[i][s2]++;
        for(int f=0; f<=2; f++)
            a[i][f]+=a[i-1][f];
    }
    for(int i=1; i<=n; i++)
    {
        for(int j=0; j<=(i); j++)
            for(int z=0; z+j<=i; z++)
                for(int f=0; f<=2; f++)
                    dp[i&1][j][z][f]=inf;

        for(int j=0; j<=i-1; j++)
            for(int z=0; z+j<=i-1; z++)
                for(int f=0; f<=2; f++)
                    for(int f2=0; f2<=2; f2++)
                    {
                        if(f==f2) continue;
                        s3=a[i-1][0]-(i-1-j-z);
                        s4=a[i-1][1]-j;
                        s5=a[i-1][2]-z;
                        s6=max(0,s3)+max(0,s4)+max(0,s5);
                        dp[i&1][j+p1[f2]][z+p2[f2]][f2]=min( dp[i&1][j+p1[f2]][z+p2[f2]][f2],dp[(i-1)&1][j][z][f]+s6);

                    }
    }
    if(min({dp[n&1][a[n][1]][a[n][2]][0],dp[n&1][a[n][1]][a[n][2]][1],dp[n&1][a[n][1]][a[n][2]][2]})==inf) cout<<-1;
    else cout<<min({dp[n&1][a[n][1]][a[n][2]][0],dp[n&1][a[n][1]][a[n][2]][1],dp[n&1][a[n][1]][a[n][2]][2]});
}

Compilation message (stderr)

joi2019_ho_t3.cpp:69:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   69 | main()
      | ^~~~
joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:13:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 | #define fin(x) freopen(x".inp","r",stdin)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:73:9: note: in expansion of macro 'fin'
   73 |         fin(task);
      |         ^~~
joi2019_ho_t3.cpp:14:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 | #define fou(x) freopen(x".out","w",stdout)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:74:9: note: in expansion of macro 'fou'
   74 |         fou(task);
      |         ^~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 55
• Subtask 3: 15 / 15
• Subtask 4: 0 / 25